54 Persei

54 Persei is a single[10] star in the northern constellation of Perseus. It is visible to the naked eye as a faint, yellow-hued star with an apparent visual magnitude of 4.93.[2] The star is located approximately 220 light years away based on parallax, but is drifting closer with a radial velocity of −27 km/s.[5]

54 Persei
Location of 54 Persei (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Perseus
Right ascension  04h 20m 24.63885s[1]
Declination 34° 34′ 00.2033″[1]
Apparent magnitude (V) 4.93[2]
Characteristics
Spectral type G8+ IIIb[3]
U−B color index +0.69[4]
B−V color index +0.95[4]
Astrometry
Radial velocity (Rv)−26.82[5] km/s
Proper motion (μ) RA: −25.046[1] mas/yr
Dec.: −6.420[1] mas/yr
Parallax (π)14.8484 ± 0.1993[1] mas
Distance220 ± 3 ly
(67.3 ± 0.9 pc)
Absolute magnitude (MV)0.80[6]
Details[7]
Mass2.57±0.10 M☉
Radius9.37±0.22 R☉
Luminosity50.7±2.0 L☉
Surface gravity (log g)2.93±0.03 cgs
Temperature5,036±32 K
Metallicity [Fe/H]+0.11±0.10 dex
Rotational velocity (v sin i)1.8[8] km/s
Age580±90 Myr
Other designations
54 Per, BD+34°860, FK5 158, GC 5235, HD 27348, HIP 20252, HR 1343, SAO 57171, CCDM J04204+3435A, WDS J04204+3434A[9]
Database references
SIMBADdata

This is an aging giant star with a stellar classification of G8+ IIIb,[3] a star that has exhausted the supply of hydrogen at its core and expanded to more than nine times the girth of the Sun. It is around 580 million years old with 2.6 times the mass of the Sun. The star is radiating 51 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 5,036 K.[7] It has one distant visual companion, designated component B, at an angular separation of 93″ and magnitude 13.0.[11]

References
  1. Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. Vizier catalog entry
  3. Keenan, Philip C.; McNeil, Raymond C. (1989). "The Perkins catalog of revised MK types for the cooler stars". Astrophysical Journal Supplement Series. 71: 245. Bibcode:1989ApJS...71..245K. doi:10.1086/191373.
  4. Mermilliod, J. C. (2006). "Homogeneous Means in the UBV System (Mermilliod 1991)". VizieR On-line Data Catalog: II/168. Originally Published in: Institut d'Astronomie. 2168. Bibcode:2006yCat.2168....0M.Vizier catalog entry
  5. Jofré, E.; et al. (2015). "Stellar parameters and chemical abundances of 223 evolved stars with and without planets". Astronomy & Astrophysics. 574: A50. arXiv:1410.6422. Bibcode:2015A&A...574A..50J. doi:10.1051/0004-6361/201424474. Vizier catalog entry
  6. Da Silva, Ronaldo; et al. (2015). "Homogeneous abundance analysis of FGK dwarf, subgiant, and giant stars with and without giant planets". Astronomy & Astrophysics. 580: A24. arXiv:1505.01726. Bibcode:2015A&A...580A..24D. doi:10.1051/0004-6361/201525770. Vizier catalog entry
  7. Reffert, Sabine; et al. (2015). "Precise radial velocities of giant stars". Astronomy & Astrophysics. 574: A116. arXiv:1412.4634. Bibcode:2015A&A...574A.116R. doi:10.1051/0004-6361/201322360. hdl:10722/215277. Vizier catalog entry
  8. De Medeiros, J. R.; Mayor, M. (1999). "A catalog of rotational and radial velocities for evolved stars". Astronomy and Astrophysics Supplement Series. 139 (3): 433. arXiv:astro-ph/0608248. Bibcode:1999A&AS..139..433D. doi:10.1051/aas:1999401. Vizier catalog entry
  9. "54 Per". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-07-21.
  10. Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x.
  11. Mason, Brian D.; et al. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466. Bibcode:2001AJ....122.3466M. doi:10.1086/323920. Vizier catalog entry
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